Derailleur hanger, gear mech hanger, dropout replacement for Cervelo, Eddy Merckx bike models:

Cervelo Dual 2005-2007
Cervelo R2.5 2005
Cervelo R3 2008-2010
Cervelo R3 SL 2006-2010
Cervelo R3 Team 2006-2007
Cervelo RS 2008-2010
Cervelo S1 2009-2011
Cervelo S2 2009-2014
Cervelo S3 2009-2010
Cervelo SLC SL 2008
Cervelo Soloist 2007-2008
Cervelo Soloist Carbon 2005-2008
Cervelo Soloist Team 2005-2008
Eddy Merckx EMX1 2010

UNION rear derailleur hanger manufactured by Marwi one of the most know manufacturers in the world:

Material: Cast aluminium.
Bolts included.
Marwi catalog number: GH-147
AKA mech hanger, gear hanger